ossimTimer Class Reference

Timer class is used for measuring elapsed time or time between two points. More...

#include <ossimTimer.h>

Public Types
typedef unsigned long long	Timer_t

Public Member Functions
	ossimTimer ()
	~ossimTimer ()
Timer_t	tick () const
	Get the timers tick value. More...
void	setStartTick ()
	Set the start. More...
void	setStartTick (Timer_t t)
Timer_t	getStartTick () const
double	time_s () const
	Get elapsed time in seconds. More...
double	time_m () const
	Get elapsed time in milliseconds. More...
double	time_u () const
	Get elapsed time in micoseconds. More...
double	time_n () const
	Get elapsed time in nanoseconds. More...
double	delta_s (Timer_t t1, Timer_t t2) const
	Get the time in seconds between timer ticks t1 and t2. More...
double	delta_s (Timer_t t1) const
double	delta_m (Timer_t t1, Timer_t t2) const
	Get the time in milliseconds between timer ticks t1 and t2. More...
double	delta_m (Timer_t t1) const
double	delta_u (Timer_t t1, Timer_t t2) const
	Get the time in microseconds between timer ticks t1 and t2. More...
double	delta_u (Timer_t t1) const
double	delta_n (Timer_t t1, Timer_t t2) const
	Get the time in nanoseconds between timer ticks t1 and t2. More...
double	delta_n (Timer_t t1) const
double	getSecondsPerTick () const
	Get the the number of seconds per tick. More...

Static Public Member Functions
static ossimTimer *	instance ()

Protected Attributes
Timer_t	m_startTick
double	m_secsPerTick

Static Protected Attributes
static ossimTimer *	m_instance = 0

Detailed Description

Timer class is used for measuring elapsed time or time between two points.

Definition at line 10 of file ossimTimer.h.

Member Typedef Documentation

Timer_t

typedef unsigned long long ossimTimer::Timer_t

Definition at line 16 of file ossimTimer.h.

Constructor & Destructor Documentation

ossimTimer()

ossimTimer::ossimTimer

(

)

Definition at line 75 of file ossimTimer.cpp.

References m_secsPerTick, and setStartTick().

Referenced by instance().

{
   m_secsPerTick = (1.0 / (double) 1000000);
   
   setStartTick();        
}

~ossimTimer()

ossimTimer::~ossimTimer ( )

inline

Definition at line 19 of file ossimTimer.h.

{m_instance = 0;}

Member Function Documentation

delta_m() [1/2]

double ossimTimer::delta_m ( Timer_t  t1, Timer_t  t2  ) const

inline

Get the time in milliseconds between timer ticks t1 and t2.

Definition at line 49 of file ossimTimer.h.

{ return delta_s(t1,t2)*1e3; }

delta_m() [2/2]

double ossimTimer::delta_m ( Timer_t  t1 ) const

inline

Definition at line 50 of file ossimTimer.h.

{ return delta_s(t1,tick())*1e3; }

delta_n() [1/2]

double ossimTimer::delta_n ( Timer_t  t1, Timer_t  t2  ) const

inline

Get the time in nanoseconds between timer ticks t1 and t2.

Definition at line 57 of file ossimTimer.h.

{ return delta_s(t1,t2)*1e9; }

delta_n() [2/2]

double ossimTimer::delta_n ( Timer_t  t1 ) const

inline

Definition at line 58 of file ossimTimer.h.

{ return delta_s(t1,tick())*1e9; }

delta_s() [1/2]

double ossimTimer::delta_s ( Timer_t  t1, Timer_t  t2  ) const

inline

Get the time in seconds between timer ticks t1 and t2.

Definition at line 45 of file ossimTimer.h.

{ return (double)(t2 - t1)*m_secsPerTick; }

delta_s() [2/2]

double ossimTimer::delta_s ( Timer_t  t1 ) const

inline

Definition at line 46 of file ossimTimer.h.

{ return (double)(tick() - t1)*m_secsPerTick; }

delta_u() [1/2]

double ossimTimer::delta_u ( Timer_t  t1, Timer_t  t2  ) const

inline

Get the time in microseconds between timer ticks t1 and t2.

Definition at line 53 of file ossimTimer.h.

{ return delta_s(t1,t2)*1e6; }

delta_u() [2/2]

double ossimTimer::delta_u ( Timer_t  t1 ) const

inline

Definition at line 54 of file ossimTimer.h.

{ return delta_s(t1,tick())*1e6; }

getSecondsPerTick()

double ossimTimer::getSecondsPerTick ( ) const

inline

Get the the number of seconds per tick.

Definition at line 61 of file ossimTimer.h.

{ return m_secsPerTick; }

getStartTick()

Timer_t ossimTimer::getStartTick ( ) const

inline

Definition at line 29 of file ossimTimer.h.

{ return m_startTick; }

instance()

ossimTimer * ossimTimer::instance ( )

static

Definition at line 19 of file ossimTimer.cpp.

References m_instance, and ossimTimer().

Referenced by ossim::CurlHeaderCache::addHeader(), ossimElevationCellDatabase::CellInfo::CellInfo(), ossimBatchTest::execute(), ossimMultiThreadSequencer::getNextTile(), ossimMultiThreadSequencer::nextJob(), ossimBatchTest::processCommands(), ossimMultiThreadSequencer::ossimGetTileJob::run(), ossimMultiThreadSequencer::setTileInCache(), ossim::CurlHeaderCache::touchEntryProtected(), and ossimElevationCellDatabase::CellInfo::updateTimestamp().

{
   if(!m_instance)
   {
      m_instance = new ossimTimer;
   }
   return m_instance;
}

setStartTick() [1/2]

void ossimTimer::setStartTick ( )

inline

Set the start.

Definition at line 27 of file ossimTimer.h.

Referenced by ossimBatchTest::execute(), and ossimTimer().

{ m_startTick = tick(); }

setStartTick() [2/2]

void ossimTimer::setStartTick ( Timer_t  t )

inline

Definition at line 28 of file ossimTimer.h.

{ m_startTick = t; }

tick()

ossimTimer::Timer_t ossimTimer::tick

(

)

const

Get the timers tick value.

Definition at line 95 of file ossimTimer.cpp.

Referenced by ossim::CurlHeaderCache::addHeader(), ossimElevationCellDatabase::CellInfo::CellInfo(), ossim::CurlHeaderCache::touchEntryProtected(), and ossimElevationCellDatabase::CellInfo::updateTimestamp().

     {
         struct timeval tv;
         gettimeofday(&tv, NULL);
         return ((ossimTimer::Timer_t)tv.tv_sec)*1000000+(ossimTimer::Timer_t)tv.tv_usec;
     }

time_m()

double ossimTimer::time_m ( ) const

inline

Get elapsed time in milliseconds.

Definition at line 36 of file ossimTimer.h.

{ return delta_m(m_startTick, tick()); }

time_n()

double ossimTimer::time_n ( ) const

inline

Get elapsed time in nanoseconds.

Definition at line 42 of file ossimTimer.h.

{ return delta_n(m_startTick, tick()); }

time_s()

double ossimTimer::time_s ( ) const

inline

Get elapsed time in seconds.

Definition at line 33 of file ossimTimer.h.

Referenced by ossimBatchTest::execute(), ossimMultiThreadSequencer::getNextTile(), ossimMultiThreadSequencer::nextJob(), ossimBatchTest::processCommands(), ossimMultiThreadSequencer::ossimGetTileJob::run(), and ossimMultiThreadSequencer::setTileInCache().

{ return delta_s(m_startTick, tick()); }

time_u()

double ossimTimer::time_u ( ) const

inline

Get elapsed time in micoseconds.

Definition at line 39 of file ossimTimer.h.

{ return delta_u(m_startTick, tick()); }

Member Data Documentation

m_instance

ossimTimer * ossimTimer::m_instance = 0

staticprotected

Definition at line 64 of file ossimTimer.h.

Referenced by instance().

m_secsPerTick

double ossimTimer::m_secsPerTick

protected

Definition at line 66 of file ossimTimer.h.

Referenced by ossimTimer().

m_startTick

Timer_t ossimTimer::m_startTick

protected

Definition at line 65 of file ossimTimer.h.

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The documentation for this class was generated from the following files:

• ossimTimer.h
• ossimTimer.cpp